Office



(No Model.)

G. S. FINNEY. MAGNETIG' ORE SEPARATOR.

N-o.'443,044. Patented Dec 16, 1890.

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U'Nme STATES,

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GEORGE S. FINNEY, OF CIIICAGO, ILLINOIS, ASSIGNO R'TO THE ROTARYMAGNETIC ORE SEPARATOR COMPANY, OF SAME PLACE.

MAGN ETlC ORE-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 443,044, dated December16, 1890. Application filed March 25, 1890. Serial No. 345,248. (Nomodel.)

To all whom, it may concern:

Be it known that I, GEORGE S. FINNEY, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Magnetic Separator-Vheels, ofwhich the following is a specification.

My invention relates to an improved construction of the wheel for use ina magnetic separator of the class in which the magnetism of the wheelacts upon the magnetically-attractable portion of the (pulverized)material to be treated for effecting the separation through anon-magnetic endless belt extending around the wheel and forming aconveyer of the material (as pulverized ore) to carry it to the wheelfor the separation, and away therefrom to shed the separated refuse ornonmagnetic portion and carry the remaining material beyond out of themagnetic influence of the wheel and there shed it.

The object of my improvement is to pro vide a simple construction of thewheel of the permanently-magnetic kind, which shall effectively serveits purpose.

In the accompanying drawings, Figure 1 is a View in elevation, with theshaft broken away toward opposite ends, of my improvedpermanently-magnetic wheel involving the preferred construction; Fig. 2,a similar view of the same, involving a modified construction; and Fig.3, a transverse section, taken 011 the line 3 3 of Figs. 1 and 2,showing either construction as it appears in cross-section.

A is the wheel, comprising as the general construction a rotary shaft13, carrying-heads C and C, having extended between them and formingelements of the cylindrical circumference of the Wheel permanentlymagnetic or magnetized metal bars D and D, alternating in polarityaround the wheel,

In Fig. l the heads 0 and C are formed of non-magnetic material, such asbrass, and the bars D and D of steel magnetized, and of the taperingform in cross-section illustrated, secured at opposite ends to the headsnear their peripheries by means of screws r in a manner to leave anarrow space longitudinally between each adjacent pair, and arranged tohave their opposite poles adjacent to each other, as shown, by securingthe negative pole of one bar to one head, as to the head 0, its oppositepole to the other head, the negative pole of the next succeeding bar tothe last-named head, and its opposite pole to the other head, and so onaround the wheel.

In Fig. 2 the heads 0 and O are formed of pcrmanently-magnetic material,or material susceptible of permanent magnetization, such as magnetizedsteel, having thebars D and D extended, thus, as pole-extensions,alternately from them, as shown, to form elements of the cylindricalsurface of the wheel, being secured alternately at respectively 0ppositeends directly to the heads, as by iron or steel screws q, and at theirother ends by screws of non-magnetic material, as brass r, such endsbeing insulated from the respective disks by suitable washers 0, whichmay also be of brass.

If desired, for the construction in Fig. 2 the poles may be cast withtheir respective heads, and the two parts connected together and theplates insulated, as shown.

I have indicated the endless belt by E in Fig. 3. It extends, as usual,from a suitable roller (not shown) around the wheel A, and when causedto travel carries the material to be treated to the magneticcircumference of the Wheel, which holds the magnetic portion of thematerial on the belt until the latter carries out of the magneticinfluence of the wheel and drops the non-magnetic portion as soon as thebelt carries it far enough over the wheel.

What I claim as new, and desire to secure by Letters Patent, is

1. A permanently-magnetic wheel A for a separator, comprising a rotaryshaft carrying heads G and C, and permanently-magnetic bars D and D,extending lengthwise between the heads, alternating in polarity aroundthe wheel, and forming elements of its cylindrical surface,substantially as described.

2. A permanently-magnctio wheel A for a separator, comprising a rotaryshaft carrying heads 0 and O, of non-magnetic material, andpermanently-magnetic bars D and 1), extending lengthwise between theheads in 2 443,04&

series of alternating polarity around and their peripheries in series ofalternating pc- 10 forming elements of the cylindrical circumlarityaround and forming elements of the ference of the Wheel, substantiallyas decylindrical circumference of the wheel, and

scribed. secured at opposite ends to the heads by 3. A permanenily-magnetic wheel A for a screws 0', substantially as described.

separator, comprising a rotary shaft B, carry- GEORGE S. FINNEY.

ing heads C and C, of non-magnetic material, In presence of andpermanently-magnetic bars D and D, J. W. DYRENFORTH,

extending lengthwise between the heads near M. J. FROST.

